Ubuntu
linux package

  1. Bug #751689
  2. Comment #7

Comment 7 for bug 751689

Revision history for this message
Phillip Susi (psusi) wrote : Re: Thinkpad x201* overheats due to slow fans when on 'auto'

It looks like thinkpads have a non standard ACPI device that handles the fan control, among other things. That is where /proc/acpi/ibm comes from. It is implemented in the kernel in drivers/platform/x86/thinkpad_acpi.c, and has some comments pointing to:

http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues